On October 30, 2010, 23-year-old Megan Duskey fell to her death at a Halloween-themed ball at the Palmer House Hilton. The young elementary school teacher at Orville T. Bright Elementary School was attempting to slide down a banister when she fell four floors. Now, Duskey’s family is claiming the girl’s death was the fault of the “Haunted Hotel Ball” hosts, and are suing for more than $500,000.

According to the Chicago Sun-Times, the family believes the event hosts allowed ticket-holders to consume an exorbitant amount of alcohol without supervision or protection. The ten-count suit, which was filed Tuesday, is naming Hilton Worldwide, the Palmer House Hilton, Surreal Chicago and Adrenaline Y2K as the hosts of the party.

The Cook County Medical Examiner’s Office stated that Duskey was dead at the scene, ruling the death an accident.

While efforts on Tuesday night to reach Hilton Worldwide and Adrenaline Y2K were unsuccessful, CEO of Surreal Chicago, Brian Pfeiffer, declined to comment based on the fact Duskey’s death occurred in the lobby of the hotel, and not while she was at the party.